Sodium metabisulfite fead grade

Product Description: 

Sodium metabisulfite is a white crystalline or powder with a slight sulfur odor, Tech grade.

The density is 1.4, freely soluble in water and glycerol, the aqueous solution is acidic, the solubility increases with increasing of the temperature, slightly soluble in ethanol.

Easily oxidized deterioration if exposured in the air , and will release SO2 relaxedly, finally become sodium sulfate, so the product should not be stored for a long time, and will resolve if heated to 150 ℃ .

Uses: 

Sodium pyrosulfite is widely used as bleach, mordant, reductive agent, Rubber solidifying agent,  also can be used for organic synthesis, pharmaceutical and spices. 

1, Pharmaceutical industry：used for the production of chloroform, phenyl sulfone and benzaldehyde.

2, Rubber industry: used for coagulation agent.

3, Printing and dyeing industry : used for cotton bleaching after the dechlorination agent, cotton cooker.

4, Leather industry : used for leather processing, can used to make leather soft, plump, tough, with waterproof, bending, wear properties.

5, Chemical industry：used for the production of hydroxyaldehyde, hydroxylamine hydrochloride and so on.

6, Photographic industry： used in the developing agent and so on.

7, Food industry：used for bleaching agents, preservatives, vegetable pine agents, colour fixative and preservatives.

8, Also can used in pulluted water treatment agent and Bamboo and wood fiber bleaching agent and so on.

 product index:

Package:

25KG PP bag, 25KG PE bag, 25KG kraft bag，1000KG jumbo bag or as your requirement.